Combining continuous access xp and bc, Operations, Step 9 – HP XP Continuous Access Software User Manual
Page 39
Continuous Access XP user guide for the XP1024/XP128
39
9.
When you are finished configuring this MCU, exit the Continuous Access XP main pane, and
disconnect the Command View XP management station from the disk array.
10.
If needed, reconnect Performance Advisor to this disk array (running PA at the same time is not
supported).
11.
-
for each disk array that will function as a Continuous Access XP MCU. After you
configure MCUs, register RCUs, and configure Continuous Access XP async options and consistency
groups, you are ready to begin Continuous Access XP volume pair operations.
Combining Continuous Access XP with other data management operations
Continuous Access XP supports concurrent operations with the following data management functions:
•
LU Size Expansion (LUSE). LUSE volumes can be assigned to Continuous Access XP pairs, if the P-VOL
and S-VOL have the same LU type and number of LDEVs. To perform LUSE operations on an existing
Continuous Access XP P-VOL or S-VOL, delete the pair first to return the volume to SMPL status.
•
CVS. Custom volumes can be assigned to Continuous Access XP pairs if the S-VOL has the same
capacity as the P-VOL. If you need to perform CVS operations on an existing Continuous Access XP
P-VOL or S-VOL, delete the pair first to return the volume to SMPL status.
•
HP Cache LUN XP. HP Cache LUN XP volumes can be assigned to Continuous Access XP pairs, and
HP Cache LUN XP operations can be performed on Continuous Access XP P-VOLs and S-VOLs.
•
LUN Security. LUN Security operations do not affect Continuous Access XP operations. Volumes under
secure ports and/or assigned to World Wide Name (WWN) groups and/or LUN groups can also be
assigned to Continuous Access XP pairs. Volumes assigned to Continuous Access XP pairs can also be
assigned to secure ports, WWN groups, and/or LUN groups for LUN Security.
NOTE:
Continuous Access XP S-VOLs cannot be accessed by any UNIX/PC server host unless the
pair is split.
•
BC. BC volumes can be assigned to Continuous Access XP pairs, and Continuous Access XP volumes
can be assigned to BC pairs. See ”
Combining Continuous Access XP and BC
” on page 39 for more
information.
BC is recommended for intra-disk array copy operations. If BC is not installed, use Continuous Access
XP (Synchronous only) to copy within the same disk array. This configuration requires at least one
external fibre cable or ESCON loop.
•
Prioritized Port Control. Initiator ports in the MCU do not support the Prioritized Port/WWN Control
option.
Combining Continuous Access XP and BC
Use Continuous Access and Business Copy in the same disk array and on the same volumes to provide
multiple copies of data at primary and/or remote sites.
describes host pair status reporting for
Continuous Access XP volumes, BC volumes, and Continuous Access XP/BC shared volumes.
shows currency of data on a shared Continuous Access XP/BC volume based on Continuous Access XP
and BC pair status.
•
For shared Continuous Access XP/BC volumes, the Continuous Access XP pair status is reported to the
host if you query the Continuous Access XP P-VOL or S-VOL. To obtain the BC pair status, query the
P-VOL of the BC pair.
•
BC supports multiple S-VOLs for each P-VOL. If you issue a pair status query to a BC P-VOL (for
example, pairdisplay), the status for only one BC pair is reported (pair with the S-VOL with lowest
LDEV ID). To obtain the pair status for BC pairs with other S-VOLs, direct the host query to the specific